Measurement of branching fractions of B decays to K1(1270)π and K1(1400)π and determination of the CKM angle α from B0 → a1(1260)±π∓

被引：19

作者：

Aubert, B. ^{[1
]}

Karyotakis, Y. ^{[1
]}

Lees, J. P. ^{[1
]}

Poireau, V. ^{[1
]}

Prencipe, E. ^{[1
]}

Prudent, X. ^{[1
]}

Tisserand, V. ^{[1
]}

Garra Tico, J. ^{[2
]}

Grauges, E. ^{[2
]}

Martinelli, M. ^{[3
,4
]}

Palano, A. ^{[3
,4
]}

Pappagallo, M. ^{[3
,4
]}

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Sun, L. ^{[5
]}

Battaglia, M. ^{[6
,7
]}

Brown, D. N. ^{[6
,7
,44
]}

Hooberman, B. ^{[6
,7
]}

Kerth, L. T. ^{[6
,7
]}

Kolomensky, Yu. G. ^{[6
,7
]}

Lynch, G. ^{[6
,7
]}

Osipenkov, I. L. ^{[6
,7
]}

Tackmann, K. ^{[6
,7
]}

Tanabe, T. ^{[6
,7
]}

Hawkes, C. M. ^{[8
]}

Soni, N. ^{[8
]}

Watson, A. T. ^{[8
]}

Koch, H. ^{[9
]}

Schroeder, T. ^{[9
]}

Asgeirsson, D. J. ^{[10
]}

Hearty, C. ^{[10
]}

Mattison, T. S. ^{[10
]}

McKenna, J. A. ^{[10
]}

Barrett, M. ^{[11
]}

Khan, A. ^{[11
]}

Randle-Conde, A. ^{[11
]}

Blinov, V. E. ^{[12
]}

Bukin, A. D. ^{[12
]}

Buzykaev, A. R. ^{[12
]}

Druzhinin, V. P. ^{[12
]}

Golubev, V. B. ^{[12
]}

Onuchin, A. P. ^{[12
]}

Serednyakov, S. I. ^{[12
]}

Skovpen, Yu. I. ^{[12
]}

Solodov, E. P. ^{[12
]}

Todyshev, K. Yu. ^{[12
]}

Bondioli, M. ^{[13
]}

Curry, S. ^{[13
]}

Eschrich, I. ^{[13
]}

Kirkby, D. ^{[13
]}

机构：

[1] Univ Savoie, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[3] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[4] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[5] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[7] Univ Calif Berkeley, Berkeley, CA 94720 USA

[8] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[9] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[10] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[11] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[12] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[13] Univ Calif Irvine, Irvine, CA 92697 USA

[14] Univ Calif Riverside, Riverside, CA 92521 USA

[15] Univ Calif San Diego, La Jolla, CA 92093 USA

[16] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[17] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[18] CALTECH, Pasadena, CA 91125 USA

[19] Univ Cincinnati, Cincinnati, OH 45221 USA

[20] Univ Colorado, Boulder, CO 80309 USA

[21] Colorado State Univ, Ft Collins, CO 80523 USA

[22] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[23] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[24] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[25] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[26] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[27] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[28] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[29] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[30] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[31] Harvard Univ, Cambridge, MA 02138 USA

[32] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[33] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[34] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[35] Univ Iowa, Iowa City, IA 52242 USA

[36] Iowa State Univ, Ames, IA 50011 USA

[37] Johns Hopkins Univ, Baltimore, MD 21218 USA

[38] IN2P3 CNRS, Lab Accelerateur Lineaire, F-91898 Orsay, France

[39] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France

[40] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[41] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[42] Univ London, London E1 4NS, England

[43] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[44] Univ Louisville, Louisville, KY 40292 USA

[45] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[46] Univ Manchester, Manchester M13 9PL, Lancs, England

[47] Univ Maryland, College Pk, MD 20742 USA

[48] Univ Massachusetts, Amherst, MA 01003 USA

[49] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[50] McGill Univ, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会; 英国科学技术设施理事会;

关键词：

DIFFRACTIVE PRODUCTION; CP-VIOLATION; SEARCH; MATRIX; STATES;

D O I：

10.1103/PhysRevD.81.052009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements of the branching fractions of neutral and charged B meson decays to final states containing a K-1(1270) or K-1(1400) meson and a charged pion. The data, collected with the BABAR detector at the SLAC National Accelerator Laboratory, correspond to 454 x 10(6) B (B) over bar pairs produced in e(+)e(-) annihilation. We measure the branching fractions B(B-0 -> K-1(1270)(+)pi(-) + K-1(1400)(+)pi(-)) = 3.1(-0.7)(+0.8) x 10(-5) and B(B+ -> K-1(1270)(0)pi(+) + K1(1400)(0)pi(+)) = 2.9(-1.7)(+2.9) x 10(-5) (< 8.2 x 10(-5) at 90% confidence level), where the errors are statistical and systematic combined. The B-0 decay mode is observed with a significance of 7.5 sigma, while a significance of 3.2 sigma is obtained for the B+ decay mode. Based on these results, we estimate the weak phase alpha = (79 +/- 7 +/- 11)degrees from the time-dependent CP asymmetries in B-0 -> a(1)(1260)(+/-)pi(-/+) decays.

引用

页数：16

共 50 条

[1] Study of the K1(1270) - K1(1400) mixing in the decays B → J/ψ K1(1270), J/ψ K1(1400)
Zhang, Zhi-Qing
Guo, Hongxia
Wang, Si-Yang
EUROPEAN PHYSICAL JOURNAL C, 2018, 78 (03):
[2] K1(1270)-K1(1400) mixing angle and new-physics effects in B→K1l+l- decays
Hatanaka, Hisaki
Yang, Kwei-Chou
PHYSICAL REVIEW D, 2008, 78 (07):
[3] Penguin-dominated B → φK1(1270) and φK1(1400) decays in the perturbative QCD approach
Liu, Xin
Zou, Zhi-Tian
Xiao, Zhen-Jun
PHYSICAL REVIEW D, 2014, 90 (09)
[4] K1(1270)-K1(1400) mixing and the fourth generation standard model effects in B → K1l+l- decays
Ahmed, Aqeel
Ahmed, Ishtiaq
Paracha, M. Ali
Rehman, Abdur
PHYSICAL REVIEW D, 2011, 84 (03):
[5] B−→K1*−(1270)(→ρ0K−)ℓ+ℓ− in LEET
S. Rai Choudhury
A. S. Cornell
Naveen Gaur
The European Physical Journal C, 2008, 58 : 251 - 259
[6] Tau decay into τt and a1(1260), b1(1235), and two K1(1270)
Dai, L. R.
Roca, L.
Oset, E.
EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (07):
[7] The semileptonic B to K1(1270,1400) decays in QCD sum rules
Dag, H.
Ozpineci, A.
Zeyrek, M. T.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2011, 38 (01)
[8] Theoretical determination of K1(1270,1400) mixing angle in QCD
Dag, Huseyin
Ozpineci, Altug
Cagil, Ayce
Erkol, Guray
3RD INTERNATIONAL CONFERENCE ON HADRON PHYSICS (TROIA'11), 2012, 348
[9] Testing leptoquark and Z′ models via B → K1 (1270,1400)μ+μ- decays
Huang, Zhuo-Ran
Paracha, Muhammad Ali
Ahmed, Ishtiaq
Lu, Cai-Dian
PHYSICAL REVIEW D, 2019, 100 (05)
[10] Branching ratios and CP asymmetries of B→a1(1260)π and a1(1260)K decays
Yang, Kwei-Chou
PHYSICAL REVIEW D, 2007, 76 (09):

← 1 2 3 4 5 →